Question

Of the floating iceberg in the sea the portion remaining above the sea level is

Answer 1

The floating iceberg portion remaining above the sea level is called 'hummock'. However it is popularly also known as 'tip'. The famous idiom 'tip of the iceberg' is quite famous.

Answer 2

Answer :

Of the floating iceberg in the sea, the portion remaining above the sea level is 1/10th of the total volume of the iceberg. The portion of the iceberg that remains floating above the sea level is referred to as hummock in oceanography. It is also called tip in simple everyday language. This is the reason behind the English idiomatic expression 'tip of the iceberg.'

Cambridge English Dictionary defines the expression 'tip of the iceberg' as 'a small, noticeable part of a problem, the total size of which is really much greater.'